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a{color:var(--color-primary);text-decoration:none;text-underline-offset:.16em;transition:color var(--transition-fast)}.lesson a:hover{color:var(--color-primary-hover);text-decoration:underline}.lesson ul,.lesson ol{display:flex;flex-direction:column;gap:var(--component-gap-xs);max-width:60rem;margin:0;padding-left:var(--space-6);color:var(--color-gray-6);font-family:var(--font-family-base);font-size:var(--text-body-lg-size);line-height:1.72}.lesson li{padding-left:var(--space-1)}.lesson li::marker{color:var(--color-gray-4)}.lesson strong{color:var(--color-gray-9);font-weight:var(--text-semibold-weight)}.lesson em{color:var(--color-gray-8);font-style:italic}.lesson blockquote{max-width:60rem;margin:var(--component-gap-md) 0;padding:var(--space-4);border:var(--border-thin) solid var(--color-primary-border);border-left:var(--border-thick) solid var(--color-primary);border-radius:var(--radius-md);background:var(--color-primary-soft);color:var(--color-gray-6);font-size:var(--text-body-md-size);line-height:1.7}.lesson code{padding:.12em .35em;border:var(--border-thin) solid var(--color-border-subtle);border-radius:var(--radius-sm);background:var(--color-surface-muted);color:var(--color-gray-8);font-family:var(--font-family-mono);font-size:var(--text-code-size);line-height:var(--text-code-line)}.lesson pre{max-width:100%;margin:var(--component-gap-md) 0;padding:var(--space-4);overflow-x:auto;border:var(--border-thin) solid var(--color-border-subtle);border-radius:var(--radius-md);background:var(--color-gray-1);color:var(--color-gray-8);font-family:var(--font-family-mono);font-size:var(--text-code-size);line-height:1.65}.lesson pre code{padding:0;border:0;border-radius:0;background:transparent;font-size:inherit;line-height:inherit}.lesson img{display:block;width:100%;max-width:72rem;border:var(--border-thin) solid var(--color-border-subtle);border-radius:var(--radius-md)}.lesson figure{width:100%;max-width:72rem;margin:var(--component-gap-md) 0}.lesson figcaption{margin-top:var(--space-2);color:var(--color-gray-5);font-size:var(--text-caption-size);font-weight:var(--text-caption-weight);line-height:1.5;text-align:center}.lesson table{width:100%;max-width:72rem;border-collapse:separate;border-spacing:0;overflow:hidden;border:var(--border-thin) solid var(--color-border-subtle);border-radius:var(--radius-md);background:var(--color-surface);color:var(--color-gray-6);font-size:var(--text-body-sm-size);line-height:1.6}.lesson th{padding:var(--space-3) var(--space-4);color:var(--color-gray-8);background:var(--color-gray-1);font-weight:var(--text-label-md-weight);text-align:left;border-bottom:var(--border-thin) solid var(--color-border-subtle)}.lesson td{padding:var(--space-3) var(--space-4);border-bottom:var(--border-thin) solid var(--color-border-subtle)}.lesson tr:last-child td{border-bottom:0}.lesson hr{width:100%;margin:var(--space-3) 0;border:0;border-top:var(--border-thin) solid var(--color-border-subtle)}.lesson ::selection{background:var(--color-primary-soft);color:var(--color-primary)}.mobile-menu-modal{display:none}@media(max-width:48em){.mobile-menu-modal{display:block}}